A yoke is a type of harness that is used to connect animals so that they move together.
Driving, when applied to horses, ponies, mules, or donkeys, is a broad term for hitching equines to a wagon, carriage, cart, sleigh, or other horse-drawn vehicle by means of a harness and working them in this way. It encompasses a wide range of activities from pleasure driving, to harness racing, to farm work, horse shows, and even International combined driving competition sanctioned by the FEI. The term in harness often is used to describe a horse being driven.
For horse training purposes, "driving" may also include the practice of long-lining (long reining), wherein a horse is driven without a cart by a handler walking behind or behind and to the side of the animal. This technique is used in the early stages of training horses for riding as well as for driving.
A horse harness is a type of horse tack that allows a horse or other equine to pull various horse-drawn vehicles such as a carriage, wagon or sleigh. Harnesses may also be used to hitch animals to other loads such as a plow or canal boat.
There are two main categories of horse harness, "breaststrap" or "breastcollar" design and the collar and hames design. For light work, such as horse show competition where light carts are used, a harness needs only a breastcollar. It can only be used for lighter hauling, since it places the weight of the load on the sternum of the horse and the nearby windpipe. This is not the heaviest skeletal area; also heavy loads can constrict the windpipe and reduce a horse's air supply.
Tack is a piece of equipment or accessory equipped on horses in the course of their use as domesticated animals. Saddles, stirrups, bridles, halters, reins, bits, harnesses, martingales, and breastplates are all forms of horse tack. Equipping a horse is often referred to as tacking up. A room to store such equipment, usually near or in a stable, is a tack room.
Saddles are seats for the rider, fastened to the horse's back by means of a girth (English-style riding), known as a cinch in the Western US, a wide strap that goes around the horse at a point about four inches behind the forelegs. Some western saddles will also have a second strap known as a flank or back cinch that fastens at the rear of the saddle and goes around the widest part of the horse's belly.